xattr -dr com.apple.quarantine /Applications/StemDeck.app

rm -rf ~/Library/Application\ Support/StemDeck/runtime ~/Library/Application\ Support/StemDeck/runtime.old

What's new in 0.7.0 Alpha 18

Export as MP4 (new)

• Export your mix as a video. Mute the vocals (or any stems) and export an MP4 that pairs your custom mix with the original picture. (#219)
  • Imported .mp4 files keep their original video, muxed losslessly with your mix.
  • YouTube imports download the real video stream (H.264, up to 720p) and mux it with your mix.
  • Pick MP4 from the export format toggle (WAV / MP3 / FLAC / MP4), then Export Mix. The MP4 option appears only for sources that have video — SoundCloud and plain audio files stay audio-only.

Linux: FFmpeg now installs automatically

• On Linux, StemDeck now downloads FFmpeg on first launch (matching Windows and macOS) instead of requiring sudo apt install ffmpeg. A system ffmpeg on your PATH is still used if present.

Fixes

• Your library no longer disappears. The desktop app no longer applies the 24-hour job cleanup to your personal library — your tracks persist until you delete them yourself (via Trash). Previously, reopening the app a day later (e.g. after installing an update) could purge a track's audio while leaving its library entry behind.

Other

• "Supporters" is now We Recommend, with new picks (Thomann, Analog4Lyfe, Empress Effects). (#228, #230)

Installing

• macOS: drop the .app into Applications and launch (run the xattr command above first).
• Windows: unzip the downloaded .zip, then run StemDeck.exe from the extracted folder.
• Linux: download the .tar.gz for your hardware, extract it, and run ./StemDeck. Install the WebKitGTK + GTK runtime prerequisites first (FFmpeg is fetched automatically on first launch):

  sudo apt install libwebkit2gtk-4.1-0 libgtk-3-0
  

  The NVIDIA build additionally needs a working NVIDIA driver such that nvidia-smi reports your GPU (the CUDA runtime itself is bundled — no separate CUDA toolkit install needed). If you have no NVIDIA GPU, use the CPU-only tarball.

Artifact build

• macOS arm64 and x64 DMGs and runtime packs were built and inspected on a macOS GitHub Actions runner before upload.

Artifact scan

• The Linux portable packages (CPU and NVIDIA) were scanned with ClamAV in CI before upload.

Artifact scan

• Windows portable packages were scanned with ClamAV in CI before upload.

xattr -dr com.apple.quarantine /Applications/StemDeck.app

rm -rf ~/Library/Application\ Support/StemDeck/runtime ~/Library/Application\ Support/StemDeck/runtime.old

What's new in 0.7.0 Alpha 17

Linux support (new)

• Portable Linux builds. StemDeck now ships portable .tar.gz packages for Linux x86_64 in two variants, each bundling a self-contained Python runtime (PyTorch + Demucs) alongside the desktop app — extract and run ./StemDeck, no toolchain required. (#220)
  • StemDeck-Linux-x64.tar.gz — CPU-only (smaller; runs anywhere).
  • StemDeck-Linux-x64.NVIDIA.tar.gz — NVIDIA/CUDA (CUDA-enabled PyTorch baked in; uses an NVIDIA GPU, falls back to CPU when none is present).
• Built and ClamAV-scanned in CI before upload, matching the Windows and macOS release pipelines.

Installing

• macOS: drop the .app into Applications and launch (run the xattr command above first).
• Windows: unzip the downloaded .zip, then run StemDeck.exe from the extracted folder.
• Linux: download the .tar.gz for your hardware, extract it, and run ./StemDeck. Install the runtime prerequisites first — StemDeck links your system's WebKitGTK and calls ffmpeg from PATH:

  sudo apt install ffmpeg libwebkit2gtk-4.1-0 libgtk-3-0
  

  The NVIDIA build additionally needs a working NVIDIA driver such that nvidia-smi reports your GPU (the CUDA runtime itself is bundled — no separate CUDA toolkit install needed). If you have no NVIDIA GPU, use the CPU-only tarball.

Artifact scan

• The Linux portable packages (CPU and NVIDIA) were scanned with ClamAV in CI before upload.
• Windows portable packages were scanned with ClamAV in CI before upload.

xattr -dr com.apple.quarantine /Applications/StemDeck.app

rm -rf ~/Library/Application\ Support/StemDeck/runtime ~/Library/Application\ Support/StemDeck/runtime.old

What's new in 0.7.0 Alpha 16

GPU support

• NVIDIA RTX 50-series (Blackwell) support. Cards with the sm_120 architecture (e.g. RTX 5060 Ti / 5070 / 5080 / 5090) now run stem extraction on the GPU. Previously they failed with CUDA error: no kernel image is available for execution on the device - StemDeck now installs a CUDA 12.8 / PyTorch 2.7 build on these cards while every other GPU keeps its existing setup. (#218, fixes #217)
• Cleaner CPU fallback. If a GPU reports CUDA available but can't actually run kernels, StemDeck now detects it at setup and falls back to CPU instead of crashing mid-extraction. (#218)

Security

• msgpack updated to 1.2.1 to clear a HIGH-severity advisory (GHSA-6v7p-g79w-8964). (#218)

Installing

• macOS: drop the .app into Applications and launch (run the xattr command above first).
• Windows: unzip the downloaded .zip, then run StemDeck.exe from the extracted folder.

Artifact build

• macOS arm64 and x64 DMGs and runtime packs were built and inspected on a macOS GitHub Actions runner before upload.
• Windows portable packages were scanned with ClamAV in CI before upload.

xattr -dr com.apple.quarantine /Applications/StemDeck.app

rm -rf ~/Library/Application\ Support/StemDeck/runtime ~/Library/Application\ Support/StemDeck/runtime.old

What's new in 0.7.0 Alpha 15

File uploads

• MP4 and M4A support. You can now drop a music video or M4A track directly - no need to convert to MP3 first. The audio is extracted automatically. (#210)
• Upload limit raised to 400 MB. Covers a standard 1080p music video. (#210)

Installing

• macOS: drop the .app into Applications and launch (run the xattr command above first).
• Windows: unzip the downloaded .zip, then run StemDeck.exe from the extracted folder.

Artifact build

• macOS arm64 and x64 DMGs and runtime packs were built and inspected on a macOS GitHub Actions runner before upload.

Artifact scan

• Windows portable packages were scanned with ClamAV in CI before upload.

xattr -dr com.apple.quarantine /Applications/StemDeck.app

rm -rf ~/Library/Application\ Support/StemDeck/runtime ~/Library/Application\ Support/StemDeck/runtime.old

What's new in 0.7.0 Alpha 14

Supporters

• Two new supporters. Joao Gaspar (Producer/Film Scorer, Touring/Session Musician) and Kris Luthier (Luthier and Musical Instrument Repair, Lisboa) join the Supporters dialog, each linking to their Instagram. (#200)
• Reworked tile layout. Tiles now show an optional role under the name and lay out as a staggered, gallery-wall style grid so taller cards no longer leave big gaps. (#200)

Fixes (macOS)

• More reliable first-run runtime download. The download URL baked into the app now points directly at the current repository instead of relying on a redirect from the old repository name. No action needed; existing installs are unaffected. (#199)

Installing

• macOS: drop the .app into Applications and launch (run the xattr command above first).
• Windows: unzip the downloaded .zip, then run StemDeck.exe from the extracted folder.

Artifact build

• macOS arm64 and x64 DMGs and runtime packs were built and inspected on a macOS Woodpecker agent before upload.

Artifact scan

• Windows portable packages were scanned with ClamAV in CI before upload.

xattr -dr com.apple.quarantine /Applications/StemDeck.app

rm -rf ~/Library/Application\ Support/StemDeck/runtime ~/Library/Application\ Support/StemDeck/runtime.old

What's new in 0.7.0 Alpha 13

Fixes

• More reliable first-run runtime download (macOS). The download URL baked into the app pointed at the project's old repository name and only kept working through a GitHub redirect we do not control. It now points directly at the current repository, so a future change to that redirect can no longer break the one-time runtime download. No action needed; existing installs are unaffected. (#199)

Installing

• macOS: drop the .app into Applications and launch (run the xattr command above first).
• Windows: unzip the downloaded .zip, then run StemDeck.exe from the extracted folder.

Artifact build

• macOS arm64 and x64 DMGs and runtime packs were built and inspected on a macOS Woodpecker agent before upload.

Artifact scan

• Windows portable packages were scanned with ClamAV in CI before upload.

xattr -dr com.apple.quarantine /Applications/StemDeck.app

What's new in 0.7.0 Alpha 9

Audio formats

• FLAC support, end to end. You can now import .flac files alongside MP3 and WAV, and export in FLAC as well: the export menu has a new WAV / MP3 / FLAC toggle that applies to the mix, the current loop region, and the All Stems .zip. FLAC is lossless like WAV but smaller on disk. (#194)

Installing

• macOS: drop the .app into Applications and launch (run the xattr command above first).
• Windows: unzip the downloaded .zip, then run StemDeck.exe from the extracted folder.

Artifact build

• macOS arm64 and x64 DMGs and runtime packs were built and inspected on a macOS Woodpecker agent before upload.

Artifact scan

• Windows portable packages were scanned with ClamAV in CI before upload.

xattr -dr com.apple.quarantine /Applications/StemDeck.app

What's new in 0.7.0 Alpha 8

Security

• macOS now verifies the FFmpeg download before running it. Setup downloads FFmpeg and ffprobe on macOS; previously they were extracted and executed with no integrity check, so a corrupt or tampered download could have been run during setup. The macOS path now checks a pinned SHA256 before the binaries are extracted or executed, and aborts with a clear error on a mismatch, matching the verification the Windows path already did. (#172)

Installing

• macOS: drop the .app into Applications and launch (run the xattr command above first).
• Windows: unzip the downloaded .zip, then run StemDeck.exe from the extracted folder.

Artifact build

• macOS arm64 and x64 DMGs and runtime packs were built and inspected on a macOS Woodpecker agent before upload.

Artifact scan

• Windows portable packages were scanned with ClamAV in CI before upload.

xattr -dr com.apple.quarantine /Applications/StemDeck.app

What's new in 0.7.0 Alpha 7

Studio

• Export Mix now reflects your mixer adjustments. Previously the exported file ignored the mixer and came out close to the original song. It now renders on demand from your current settings, so per-stem volume, mute, and solo are all applied and the export matches what you hear. Works for both WAV and MP3, and for the current loop region. The master volume slider is intentionally not baked in (it is a monitoring level, not part of the mix), so default exports stay at full loudness. "Export All Stems" is unchanged and still gives you the raw isolated stems for re-mixing elsewhere. (#183)

Installing

• macOS: drop the .app into Applications and launch (run the xattr command above first).
• Windows: unzip the downloaded .zip, then run StemDeck.exe from the extracted folder.

Artifact build

• macOS arm64 and x64 DMGs and runtime packs were built and inspected on a macOS Woodpecker agent before upload.

Artifact scan

• Windows portable packages were scanned with ClamAV in CI before upload.

xattr -dr com.apple.quarantine /Applications/StemDeck.app

What's new in 0.7.0 Alpha 6

Reliability

• Fixed the waveform being offset from the playhead and the audio. The stem lanes were drawn a fixed 48px to the right of the ruler, so t=0 in the audio landed before the waveform visually began. The gap was constant in pixels, so it read as a different number of seconds per track (longer songs showed a bigger gap) and stayed put when you moved the marker. The overview layer now starts exactly at the ruler's 0:00, so the playhead, what you hear, and the waveform line up. (#189)
• Restored the bar-style waveform. With the audio engine driving playback, the lanes had switched to a filled envelope shape. They now render as discrete bars again (matching the rest of the studio), with silent sections shown as a faint baseline. (#189)

Installing

• macOS: drop the .app into Applications and launch (run the xattr command above first).
• Windows: unzip the downloaded .zip, then run StemDeck.exe from the extracted folder.

Artifact build

• macOS arm64 and x64 DMGs and runtime packs were built and inspected on a macOS Woodpecker agent before upload.

Artifact scan

• Windows portable packages were scanned with ClamAV in CI before upload.